/Engine/Source/Runtime/MovieScene/Public/Channels/MovieSceneChannelData.h
Get all the keys in the given range. Resulting arrays must be the same size where indices correspond to both arrays.
void GetKeys ( const [TRange](API\Runtime\Core\Math\TRange)< [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) > & WithinRange, [TArray](API\Runtime\Core\Containers\TArray)< [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) > * OutKeyTimes, [TArray](API\Runtime\Core\Containers\TArray)< [FKeyHandle](API\Runtime\Engine\Curves\FKeyHandle) > * OutKeyHandles )